Condensed Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	At The Market Offering	Follow-on Public Offering	Common Stock	Common Stock At The Market Offering	Common Stock Follow-on Public Offering	Additional Paid-In Capital	Additional Paid-In Capital At The Market Offering	Additional Paid-In Capital Follow-on Public Offering	Accumulated Other Comprehensive (Loss) Income	Accumulated Deficit
Beginning balance, common stock (in shares) at Dec. 31, 2020				41,729
Beginning balance at Dec. 31, 2020	$ 211,294			$ 42			$ 362,270			$ (17)	$ (151,001)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from, net of issuance costs (in shares)					3,156	5,750
Issuance of common stock, net of issuance costs		$ 30,221	$ 60,638		$ 3	$ 6		$ 30,218	$ 60,632
Exercises of common stock options (in shares)				342
Exercises of common stock options	1,019						1,019
Vesting of restricted stock units (in shares)				223
Vesting of restricted stock units	0
Stock-based compensation expense	2,825						2,825
Other comprehensive income (loss)	(8)									(8)
Net loss	(26,535)										(26,535)
Ending balance (in shares) at Mar. 31, 2021				51,200
Ending balance at Mar. 31, 2021	279,454			$ 51			456,964			(25)	(177,536)
Beginning balance, common stock (in shares) at Dec. 31, 2020				41,729
Beginning balance at Dec. 31, 2020	211,294			$ 42			362,270			(17)	(151,001)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	(7)
Net loss	(30,546)
Ending balance (in shares) at Jun. 30, 2021				51,221
Ending balance at Jun. 30, 2021	278,462			$ 51			459,982			(24)	(181,547)
Beginning balance, common stock (in shares) at Mar. 31, 2021				51,200
Beginning balance at Mar. 31, 2021	279,454			$ 51			456,964			(25)	(177,536)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises of common stock options (in shares)				21
Exercises of common stock options	83						83
Stock-based compensation expense	2,935						2,935
Other comprehensive income (loss)	1									1
Net loss	(4,011)										(4,011)
Ending balance (in shares) at Jun. 30, 2021				51,221
Ending balance at Jun. 30, 2021	$ 278,462			$ 51			459,982			(24)	(181,547)
Beginning balance, common stock (in shares) at Dec. 31, 2021	51,265			51,265
Beginning balance at Dec. 31, 2021	$ 223,805			$ 51			465,865			(238)	(241,873)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises of common stock options (in shares)				64
Exercises of common stock options	359						359
Vesting of restricted stock units (in shares)				345
Vesting of restricted stock units	0
Stock-based compensation expense	2,829						2,829
Other comprehensive income (loss)	(663)									(663)
Net loss	(37,367)										(37,367)
Ending balance (in shares) at Mar. 31, 2022				51,674
Ending balance at Mar. 31, 2022	$ 188,963			$ 51			469,053			(901)	(279,240)
Beginning balance, common stock (in shares) at Dec. 31, 2021	51,265			51,265
Beginning balance at Dec. 31, 2021	$ 223,805			$ 51			465,865			(238)	(241,873)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises of common stock options (in shares)	71
Other comprehensive income (loss)	$ (859)
Net loss	$ (70,880)
Ending balance (in shares) at Jun. 30, 2022	51,681			51,681
Ending balance at Jun. 30, 2022	$ 157,730			$ 51			471,529			(1,097)	(312,753)
Beginning balance, common stock (in shares) at Mar. 31, 2022				51,674
Beginning balance at Mar. 31, 2022	188,963			$ 51			469,053			(901)	(279,240)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises of common stock options (in shares)				7
Exercises of common stock options	33						33
Stock-based compensation expense	2,443						2,443
Other comprehensive income (loss)	(196)									(196)
Net loss	$ (33,513)										(33,513)
Ending balance (in shares) at Jun. 30, 2022	51,681			51,681
Ending balance at Jun. 30, 2022	$ 157,730			$ 51			$ 471,529			$ (1,097)	$ (312,753)